Tire upsetter and shrinker.



J. F. BOYD.

TIRE UPSETTER AND SHRINKER.

APPLICATION FILED T11R15 191 2.

Patented Mar. 17, 1914.

3 SHEETS-SHEET l.

WITNESSES ATTORNEYS" COLUMBIA PLANOGRAPH co. WASHINGTON, D. c.

J. P. BOYD. TIRE UPSETTER AND SHRINKER. APPLICATION FILED FEBJS, 1912.

1,090,681., Patented Mar. 17, 1914.

3 SHEETS-"SHEET 3.

IIIIIIII/I ATTORNEYS JAMES E. BOYD, or BIGELOW, ARKANSAS.

TIRE UPSETTER AND SHRINKER.

Specification of Letters Patent.

Patented Mar. it, rare.

Application filed. February 15, 1912. Serial No. 677,680.

To all whom it may concern:

Be it known that 1, JAMES F. Born, a citizen of the United States, and aresident of Bigelow, in the county of Perry and State of Arkansas, haveinvented a new and Improved Tire Upsetter and Shrinker, of which thefollowing is a full, clear, and exact description.

My invention relates to an improvementin apparatus for upsetting orshrinking metallic tires intended for the wheels of vehicles, and itcomprises a pair of upsetting blocks which are mounted to be movedtoward and from each other, and which carry gripping meansfor engagingthe edge of the tire to crowd or compress the body thereof together, andthus reduce the circumference of the tire to the required extent, andmake it it more tightly upon the wheel. The blocks are positivelyoperated to be moved toward each other to cause the grips to perform thecompressing operation, and means are also provided to return them afterthe operation of gripping, to their original positions.

Reference is to be had to the accompanying drawings forming a part ofthis specification, in which the same characters of reference indicatethe same parts in all the views.

Figure 1 is a top plan of my improved upsetting and shrinking device,showing the gripping blocks at the limit of their movement toward eachother; Fig. 2 is an end view thereof; Fig. 3 is a transverse verticalsection on the line 3-3 of Fig. 1; Fig. 4 is a longitudinal verticalsection on the line l l of Fig. 2; Fig. 5 is 'a side view of thegripping blocks, showing the lever for returning the same to startingposition; Fig. 6 is a top plan of the machine, showing the parts inposition to begin the compressing operation; Fig. 7 is a longitudinalsectional view on the line 77 of Fig. 6; Fig. 8 shows a perspective viewof one of the gripping blocks; Fig. 9 is a perspective view of the othergripping block; Figs. 10 and 11 are views of the grips which are mountedupon the gripping blocks to engage the tire; and Fig. 12 is aperspective view of a support or spacing block which is designed to bemounted upon the tops of the gripping blocks and form rests upon whichthe grips are placed.

()n the drawings, the numeral 1 represents a framework mounted uponsuitable supports 2, and having a horizontal portion 3 secured to thesides of the main framework 1, by means of bolts 4. Upon this frameworkare carried the gripping blocks 5 and 6, which have interfittingengagement with each other and are movable toward and from each other tocompress the body of the tire which is to be shrunk.

The gripping blocks 5 and 6 preferably have the shape shown in Figs. 8and 9. The block 6 has at one end a raised portion formmg a rest orsupport 7, upon which a portion of the other block 5 is arranged toslide. The rest or support 7 has recesses in its upper edges at one endof the block 6, which are indicated at 8 and 9, and the bottom of theblock 5 has corresponding project-ions 10 and 11 at its adjacent end tofit into the recesses 8 and 9, these lugs serving to control rhemovement of the blocks 5 and 6 toward and from each other. The block 6further has a recess 12 arranged centrally thereof, and this recess 12receives a vertical portion 13 of the block 5, the thickness of thisvertical portion being considerably less than the length of the recess12. so that the portion 13 of the block 5 can move back and forththerein. The block 5 further terminates in a projection 14:, which israbbeted along one edge to form a shoulder 15, and the reduced extremityof the pro ection 14 passes through an aperture 16 in a projection 17 atthe opposite end of the block One face of the vertical portion 13 of theblock 5 may be provided with a shoulder 5', and the ends of thisshoulder may be inclined, as shown. The inner face of the projection 17will be recessed in a manner corresponding to the shape of the shoulderto receive the same. The presence of this shoulder and the recessreceiving it is not essential and both may be omitted if desired.

The inner surface of the rest 7 and the adjacentsurface of the verticalsection 13 of the block 5 have recesses '18 therein to receive wearingpieces 19. These wearing pieces are engaged by the ends of a cam 20formed upon an operating shaft 21; and when this cam is turned, thevertical section 13 of the block 5 will be forced away from the rest 7,and over toward the projection 17 at the opposite end of the block 6, tocause the body of the tire to be compressed. The shaft 21 is mounted inhearings in the main frame 1, and carries adjacent one end a miter gear22, which is engagedby apinion 23 keyed upon a shaft 24. The pinion 23is located adjacent one end of the shaft 24 which is mounted in bearings25 supported by brackets 25 connected to the framework 1 in any requiredmanner; and it also carries a ratchet wheel 26 operated by means of alever 27. This lever 27 carries a springpressed pawl 28, which engagesthe ratchet wheel as the lever 27 is moved downward.

The teeth on the gears 22 and 23 are large and heavy, and the shaft 21will be mounted in roller bearings carried by the frame at its endadjacent the gear 21, and in bear ings formed of ant-i-frlction metal atits 0pposite end.

The top of the projection 17 from one end of the block 6, hasoverhanging portions 29, located on either side of the block andextending toward the rest 7. These overhanging portions terminate inguiding lugs 30, which extend past shoulders 31 in the block 5, theseshoulders being located at the inner end of a trapezoidally shapedrecess 32 in the top of the block 5. The guiding lugs have shoulders attheir inner ends, as shown in Fig. 9, and the space between the guidinglugs 30 communicates with a trapezoidally-shaped recess in the top ofthe block 6, similar in all respects to the recess 32 in the otherblock.

The numeral 33 represents a depression 111 the bottom of the recess 32,between the shoulders 31, and in this recess fits a plate 34, this platenormally extending from the inner edge of the recess 33, across the central recess 12 in the block 6, to the edge of the recess 35 in the endsurface of the block 6, when the blocks 5 and 6 are forced together. Theplate 34 is secured to the block 5 by means of screws which pass intoapertures in the bottom of the recess 33, as shown in Fig. 8.

The numerals 36 represent a pair of porting blocks having perforatedlugs 37 extending from one end. These blocks have their lateral edgesconverging to enable them to fit into the recesses 32 and 35, and theirupper surfaces are concave to enable them to fit the curvature of a tireto be shrunk. When in position, the wide ends of these blocks, as wellas the longer of the two parallel sides of the recesses 32 and 35, willlie adjacent each other, and the inner ends of the pieces 36 will fitagainst the shoulders 31 in the block 5, and the shoulders at the innerends of the guiding lugs 30 of the gripping block 6.

Upon the blocks 36 I place the gripping pieces 38. These gripping piecesare in the form of flat plates having one end rabbeted and having a lug40 at the other end, and a lug 39 on one side adjacent the rabbetedportion aforesaid. The other side of the gripping pieces has teeth orserrations 41 formed thereon. These gripping pieces are so shaped thatwhen they are mounted upon the gripping blocks, 5 and 6, their rabbetedends will rest against the shoulders 31, and the shoulders atthe innerends of the guiding lugs 30; and the serrated portions 41 of the severalblocks will be opposed to one another, as shown particularly in Fig. 6.The tire to be shrunk is shown at 42, and when the tire is in positionto be worked by the machine, it will lie between the edges of thegripping pieces 38 on which are formed the serrations or teeth 41,-andbe engaged along its opposite edges by these gripping pieces. V

One end of the block 5 has lugs 43 on either side. These lugs 43 areconnected by means of springs 44 to lugs 45 projecting from the frame 1.The opposite end of the block 6' has projections 46, and from theseprojections extend longitudinal bosses'which are surrounded by spiralsprings 47 fitting in recesses 48 in the framework 1. The

springs 44 and 47 move the blocks 5 and 6,

respectively, in opposite directions. When the cam 20 is turned fromvertical to horizontal position, the blocks 5 and 6 are forced together.After passing horizontal position the springs again move the blocks 5and 6 apart. Should, however, the springs 44 and 47 fail to have thiseffect, I movethe blocks away from each other to their originalposition, by means of a lever 49. This lever49 is pivotally mounted 011the framework 1,

and is connected by a link 50 to the block and a. link 51 to the block6. When moved from full-line position to dotted-line position, referringto- Fig. 5, the lever 49 acts to move the blocks away from each other.The side of the block 5 may have a recess 50 to receive the link 50.

52 is a lug carried by the frame 1 adjacent the center of the apparatus,and on this lug is pivotally mounted a locking lever 53. This lockinglever has a projection 54, which presses down upon the tire 42, andholds it in a given position. The outer end of the lever isreceivedbetween the arms of a plvoted yoke 55, mounted in a lug 56, op-

posite the lug 52. The arms of the yoke 55 r have aperturest-herethrough, and through these apertures passes a pin 58, which isarranged to engage the upper edge of the lever 53, and lock this lever.and the tire on which it presses in position.

WVhen the parts are assembled, the .guiding lugs 30 of the block 6 willpass between the shoulders 31 of the block 5, to insure that the blockswill always be in line with each other when the tire is being worked.The outer 7 ends of these lugs will of course'be arranged to clear theinner ends of the gripping pieces 38, carried by the block 5; and when atire is put in position, this tire will rest upon the top ofthesupporting pieces 36, between the gripping pieces 38, and be engaged bythe teeth or serrations 41 on the four gripping pieces along itsopposite edges, to be compressed by crowding the metal of the body ofthe tire together whenever the block 5 moves toward the block 6. Themovement of the blocks toward each other is obtained by pressing downupon the lever 27. This will rotate the shaft 24, and through thegearing 22 and 23, the shaft 21, turning the cam 20. As this cam rotatesit will enage the wearing pieces 19 and force the vertical portion 13 ofthe block 5 away from the rest 7 of the block 6.

The gripping pieces 38 are designed for tires which are to be shrunkwhile hot, and the tire will of course be handled with pincers to bringevery part of it in turn in position to be engaged by the grippingpieces 38, until it has been compressed over its entire circumference.For cold work I may employ a gripping piece 59 having the same generalshape as the gripping pieces 38, and provided with a perforated ear 60at one end and a serrated portion 61.

It is to be understood that the embodiment of my invention shown in theaccompanying drawings and described herein is intended as illustrativeonly, and I do not wish to be restricted to the details thereof, exceptin so far as is indicated by the accompanying claims.

Having thus described my invention, I

claim as new and desire to secure by Letters Patent:

1. In a tire shrinker and upsetter, the combination of a pair ofmovably-mounted members having opposed surfaces, gripping means carriedupon said members to engage the body of a tire to be shrunk and compressthe same, means engaging the opposed surfaces of the members to move thesame to cause the gripping means to compress the tire, and meansengaging said members to move the same in the opposite direction.

2. In a tire shrinker and upsetter, the combination of a pair ofmovably-mounted members, gripping means carried by said members toengage and grip the body of a tire and compress the same, means formoving said members in one direction, means for moving said members inthe opposite or return direction, and a lever for returning said membersin the opposite direction in case the first-named returning means failsto operate.

3. In a tire shrinker and upsetter, the combination of a pair of blocks,one of said blocks having a rest at one end and a projection at theopposite end, the said rest and the said projection being separated by arecess or depression, and the other of said blocks being received bysaid recess and having a portion supported by said rest on the firstblock, the said block also having a guide which passes through anaperture in the projection at the other end of said first block.

4:. In a tire shrinker and upsetter, the combination of a pair ofmovably-mounted members each having a recess therein, said recesseshaving shoulders, gripping means carried in said recesses and engagingsaid shoulders, to grip the body of the tire and compress the same, andguiding lugs carried by one of said members and extending from theshoulder-forming portions of said member past the shoulder-formingportions of the other member.

5. In a tire shrinker and upsetter, a pair of movable members havingopposed surfaces, each of said members carrying gripping devices toengage a tire and compress the same, a shaft having a double cam thereonto engage said opposed surfaces and move the members to cause thegripping devices to make their working strokes.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

JAMES F. BOYD.

Witnesses:

W. E. Guam, 1?. S. BODDEKER.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, I). G.

